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2Sheets--SheetL R. PRMAUX. Centrifugal Sugar-Machine.

No. 224,674. Patented'Feb. 17, 1880.

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INVEN TORI vv TNEssEs:

N-PETERS. PMOTU-LITHDGRAFMER. WASHINGTON D C i UNITED" STATES RAPHAEL EEEMAUx,

PATENT Erica or PARIS, FRANCE.

(ENTRIFLJCAl SUGAR-MACHINE.'v

SPECIFICATION forming part of Letters Patent No. 224,674, dated February I7, 1880.

y Application filed ]-)eccember4, 1879.

To all whom it may concern:

Be it known' that I, RAPHAEL FRMAUX, 1

of Paris, France, have made certain Improvementsin Centrifugal Sugar-Machines, of which i l claim, therefore, .as my invention are the previous drainage before turbination centrifugal action, the peculiar, construction ofthe steam-box, and the introduction of the steam from below in preparatioirin the mixer.

In the drawings which serve to illustrate my invention, Figure l is a vertical mid-section of a centrifugal apparatus or turbine provided with my improvements. Fig. 2 is aplan View of the same, the left side or half being in sectionv on the horizontal line fr a: in Fig. 1.

A is the outer shell, provided with a drain, a, having an outlet, a'. B is a vertical shaft, provided with suitable bearings, as V shown, and arranged to be rotated by a belt onapulley, C, keyed to the shaft. This pulley is provided with a'fsuitable brakinglever and belt, (represented generally by D.) 0n the shaft B is mounted the drum, which I will now describe. The outer wall is composed of a perforated metal sheet, b, and inside this is another or lining wall, c, of wire-gauze or iinelyperforated metal, the two being slightly sepa rated. The drum has a bottom, d, perforated with a few holes, e, and a false bottom, f, arranged above`the bottom` d. By its bottom this drum is secured to a sheet-metal cone, g, by which it is mounted on the shaft B. This cone forms a cap to protect the bearing-cap h, and is perforated to facilitate lubrication. Into the drum last described is .fitted a cylinder, E, open at the top, and formed by an external shell, t, of wire-gauze, and an in-` ternal shell, j, of sheet metal. These are arranged to leave an annular steam-space be tween them, and they are riveted at both top and bottom, and at various heights, to hoops k. This cylinder E is provided with cross arms l. by which it is hung on the shaft B, and to two of these may be fixed handles, by which the cylinder can belifted out. The cylinder E is provided with a sheet-metal cone, m, ared outwardly at the bottom, and connected with the shell j by an annular bottom platent. Between the cones m and g is an annular space, o, through which the water is drained off. The width of the annular space o between the cones may be regulated and divided and the cylinder centered by the employment of conical wedges, the `saine to be covered with sheet met-al. By means of these I am enabled to place the cylinder'in any position I may choose, according to the work to be performed, and these wedges may be made adjustable at pleasure.

The cover of the shell A, which is not rep.- resented in the drawings, is provided `with an orifice for the admission of the steam, and on the inside a small cap which vshuts off the water. The outer drum is constructed in the ordinary mannen, generally, and to commence operations the inner cylinder, E, is let down into it by some suitable means and the sugar to be operated upon put into the annular space between the two drums.` The annular cover F is then put o n and fastened by means of the bolts p p, and the drum set in motion. As soon as the proper rotary velocity has been reached the cover of the shell A is put on and the steam admitted. As the steam enters at the top the water of condensation collects in the cylinder E, and, being acted upon by the centrifugal force, rises up along the wall j and is expelled. The steam drawn to the center by the rarefied air passes down into the bottom of the drum between the cones m and g. The water of condensation carried down or formed below strikes the bottom u, and is ex-f-w IOO out. The drum then presents its usual appearance.

The objects attained by my apparatus and method are these:

First, I admit the steam at the bottom, and thus avoid such contact with the sugar as would tend to harden the first layer too soon and before the entire mass could be purified.

Second, to avoid too great condensation the steam-chamber is kept closed as far as possible.

Third, I take advantage of the action of gravity upon the water of condensation, so as to drain it off below.

Fourth, I arrange a chamber to catch the Water of condensation and employ centrifugal force to throw it ott.

Having thus described my invention, I claiml. The inner cylinder, E, provided with the Waterchamber formed by the sheets j and m and the bottom a, in combination with the outer drum having the cone g, the two cones m and g being arranged to leave an annular space between them, for the purposes set forth.

2. The inner cylinder, E, composed of the gauze drum t', the imperforated drum j,the in-l openings q q, all substantially as and for the purposes set forth.

3. The outer drum, constructed of the perforated hoops or sheets 'b c, the ring-cover F, provided with fasteningfbolts p p, the perforated bottom cl, the false bottom f, and the internal cone g, all combined and arranged to operate substantially as set forth.

4. The outer drum, With the false bottom f, perforated bottom d, and inner cone, g, With the inner cylinder, E, arranged to rest upon the bottom f, and provided with a shorter flared inner cone, m, all substantially as and for the purposes set forth.

In testimony whereof Ihave signed my name to this specification before two subscribing witnesses.

R. FRMAUX.

Witnesses:

Ron'r. M. Hoeren, A. GABY. 

